clear as mud

• adj. 不明显(不确实)

例句

用作形容词 (adj.)

1. Black reefs scatter over the bay, appear indistinctly as the tide waves leap.
   黑色的缩帆散开过海湾，当潮流波浪跳跃时，不明显地出现。
2. A hill, on the other hand, isn't as tall, and it has gentler slopes and a more poorly defined summit.
   从另一方面来说，小山不如高山高，山坡平缓一些，山顶不明显。